29 lines
1.2 KiB
Diff
29 lines
1.2 KiB
Diff
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From 85f85783569c4a662262c7b7579fb130d25ccd42 Mon Sep 17 00:00:00 2001
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From: Jan Engelhardt <jengelh@inai.de>
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Date: Thu, 7 Nov 2013 01:17:49 +0100
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Subject: [PATCH] man: add rationale into systemd-halt(8)
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The explanation is from
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http://people.debian.org/~stapelberg/docs/systemd-dependencies.html
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---
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man/systemd-halt.service.xml | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/man/systemd-halt.service.xml b/man/systemd-halt.service.xml
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index 812281e..90b443f 100644
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--- a/man/systemd-halt.service.xml
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+++ b/man/systemd-halt.service.xml
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@@ -83,6 +83,12 @@
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remaining swap devices, detach all remaining storage
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devices and kill all remaining processes.</para>
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+ <para>It is necessary to have this code in a separate binary
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+ because otherwise rebooting after an upgrade might be broken —
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+ the running PID 1 could still depend on libraries which are not
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+ available any more, thus keeping the filesystem busy, which
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+ then cannot be re-mounted read-only.</para>
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+
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<para>Immediately before executing the actual system
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halt/poweroff/reboot/kexec
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<filename>systemd-shutdown</filename> will run all
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